Display screen with a graphical user interface



FIG. 1 is a front view of a display screen with a graphical user interface showing our new design; and,

FIG. 2 is a front view showing a second embodiment thereof.

The broken lines in the drawings illustrate portions of the display screen and graphical user interface including text, shading, icons, and shapes that form no part of the claimed design. 

CLAIM The ornamental design for a display screen with a graphical user interface, as shown and described. 